WL ticket agar e-ticket hai to wo charting pe automatic cancel ho jaata hai.. to usko leke safar karna bina ticket travel jaisa hi hai.. obviously wo jurm hai.
WL ticket agar PRS ticket hai to usko leke Reserved coaches mein chadhne ki permission nahi hai officially.. aap general unreserved coach mein safar kar sakte hain as per rules.. lekin jyadatar log WL PRS ticket lekar reserved coaches me hi ghuste hain aur TTE se seat lene ki koshish karte hain.. technically reserved coaches mein ghusna galat hai agar aapki seat confirmed nahi hai